Plants accumulation

Moreno, F.N., Anderson, C.W.N., Stewart, R.B., and Robinson, B.H., Phytofiltration of mercury-contaminated water Volatilisation and plant-accumulation aspects, Environmental and Experimental Botany, 62, 78-85, 2008. 

Lead may also interact detrimentally with aquatic life. Once lead deposits in soil, it sticks to soil particles and is only displaced by rain water, ending up in water sources where it affects the aquatic life. Some plants accumulate Pb from both contaminated soils and water sources or more specifically water in the rhizosphere. Besides, contaminated soils are liable to remain polluted with lead this will affect soil fertility.3,4 The fact that large changes in the lead content of soil are required to produce changes in the aerial parts of the plants as compared to changes in aerial lead concentration is closely reflected in the leaf lead concentration. Accumulation of Pb in grasses remains a potential hazard to livestock.3... 

Transgenic plants, accumulation within plant Economy, biomass yields, scalability, establishment of permanent lines Production timescale, regulation, biosafety, product yields... 

Data are scarce on ecosystems treated with paraquat. It is clear, however, that both terrestrial and aquatic plants accumulate paraquat, and that the compound disappears rapidly from the water column and tends to concentrate in surface muds (Table 22.1). 

A plant accumulates nutrients from the soil as it grows. Such accumulation depletes the amount of nutrient remaining in the soil so, harvesting an arable crop, such as maize, barley or com, removes nutrients from the field. A farmer needs to replenish the nutrients continually if the land is not to become exhausted after a few seasons. 

An early CO distillation pilot plant described by Johns (in London (1961), reading list), used a two section vacuum insulated column packed with wire gauze rings. The upper section was 5.2 m long with a diameter of 3.2cm, the lower 4.6 m x 1.9 cm. The column contained about 600 plates. An intermediate boiler re-evaporated part of the downward flowing liquid at the junction. This plant accumulates product in the liquid and enriches toward the bottom. Enriched CO (0.4 g day-1 of 65% 13C and 0.05 g day-1 of 5% lsO) was withdrawn from the bottom... 

Tobacco plants accumulate radon from the soil. Uranium from the phosphate fertilizer used on the plants is also another source of radiation. Small amounts of lead-210 are spread on the tobacco leaves. Thus, smokers are exposed to levels of radiation that is about 1,000 times higher than the radiation exposure of workers in nuclear power plants. 

Effect of water stress on susceptibility of barley to aphids. Barley seedlings were subjected to water stress. These plants accumulated among other compounds proline and glycine-betaine (Table IV). Also, the more stressed plants were the most susceptible to aphids. The cultivar used in this experiment lacked gramine. However, when a gramine-containing cultivar was used gramine concentration was not affected by water stress. 

Bell, R. M. (1992). Higher Plant Accumulation of Organic Pollutants from Soils. EPA/600/SR-92/138. 

In plants accumulating anthocyanins, flavonols, and proanthocyanidins, naringenin is stereospecifically hydroxylated at position 3 of the C-ring (C3) by the 2-oxoglutarate-dependent dioxygenase flavanone 3-hydroxylase (F3H, EC 1.14.11.9) to yield the 3-hydroxy-trans-flavanone (syn. dihydroflavonol) dihy-drokaempferol [Springob et al., 2003] (Fig.21 2). Dihydroquercetin (3, 4, 5,5, 7-... 

McLachlan, M.S., A. Reischl, M. Reissinger, and O. Hutzinger. 1989. Some Thoughts on Plant Accumulation of Airborne Organic Pollutants. In D. Mackay and S. Paterson, Eds., Human Exposure to Chemicals, Institute of Environmental Studies, University of Toronto. 

In AM plants, accumulation of secondary metabolites has been reviewed (Azcon-Aguilar and Barea, 1996 Morandi, 1996 Vierheilig et al., 1998 Mukeqi, 1999). 

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